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3 years ago

The Dewey Civic Center has 1,600 seats. Tickets for 85% of the total number of seats were sold. How many tickets were sold?

Mathematics

1 answer:

Juliette [100K]3 years ago

4 0

1600×85%=1360 I think that 1360 Tickets were sold

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Dexter is curious as to whether there is a relationship between a person’s height and thumb length. Fourteen of his classmates v

love history [14]

The answer to this question is 7.404

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3 years ago

A brick is thrown upward from the top of a building at an angle of 250 above the horizontal, and with an initial speed of 15 m/s

mojhsa [17]

Answer:

(a) 25.08 m

(b) 2.05 m

Step-by-step explanation:

Let the height of the building be 'h'.

Given:

Angle of projection is, $\theta=25$ °

Initial speed is, $u=15\ m/s$

Time of flight is, $t=3.0\ s$

(a)

Consider the vertical motion of the brick.

Vertical component of initial velocity is given as:

$u_y=u\sin\theta\\\\u_y=15\sin(25)=6.34\ m/s$

Vertical displacement of the brick is equal to the height of the building.

So, vertical displacement = $-h$ (Negative sign implies downward motion)

Acceleration is due to gravity in the downward direction. So,

Acceleration is, $g=-9.8\ m/s^2$

Now, using the following equation of motion;

$-h=u_yt+\frac{1}{2}gt^2\\-h=6.34(3)-\frac{9.8}{2}(3)^2\\\\-h=19.02-44.1\\\\-h=-25.08\\\\h=25.08\ m$

Therefore, the building is 25.08 m tall.

(b)

Let the maximum height be 'H'.

At maximum height, the vertical component of velocity is 0 as the brick stops temporarily in the vertical direction.

So, $v_y=0\ m/s$

Now, using the following equation of motion, we have:

$v_y^2=u_y^2+2gH\\\\0=(6.34)^2-2\times 9.8\times H\\\\19.6H=40.2\\\\H=\frac{40.2}{19.6}=2.05\ m$

Therefore, the maximum height of the brick is 2.05 m.

5 0

3 years ago

AC=8x-14 and EC=2x+11, solve for x

dimaraw [331]

Answer:

x = 4.167

Step-by-step explanation:

8x - 14 = 2x + 11 add 14 to 14

8x = 2x + 25 subtract 2x to 2x and 8x

6x = 25 divide by 6

x= 4.167 repeating

7 0

4 years ago

How to round to the naerst 10?

Blababa [14]

So, say your # was 6,234,578. you would go to the seven and look to the number next to in, so 8, and if the neighbor is 5 or bigger, you make the number, in this case a 7 an 8. Last, you make all the other #s after the one you rounded 0. So the answer would be:

6,234,570.0

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3 years ago

Which equation can be simplified to find the inverse of y = 5x² + 10?

notsponge [240]

Answer:

See below

Step-by-step explanation:

Here is how to start....you didn't include the equations in question, so I do not know what the answer may be

solve for x

y-10 = 5 x^2 divide thru by 5

(y-10)/5 = x^2 'sqrt' both sides

± sqrt( (y-10) / 5 = x change x's and y's

± sqrt ((x-10)/5) = y

6 0

2 years ago